Comparable stake leader
BALYASNY ASSET MANAGEMENT L.P.
SEC ownership of JATT II Acquisition Corp.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0002112446.
Disclosed value leader
BALYASNY ASSET MANAGEMENT L.P.
Comparable rows
26/33
Latest evidence
30 Jun 2026
- Public ticker
- JATT on Nasdaq
- Parsed ownership sources
-
13D/G, 13F, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
BALYASNY ASSET MANAGEMENT L.P.
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
26 of 33
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
BALYASNY ASSET MANAGEMENT L.P.
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
30 Jun 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0002112446
- Issuer location
- George Town
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of JATT II Acquisition Corp. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
BALYASNY ASSET MANAGEMENT...
Disclosed value leader
BALYASNY ASSET MANAGEMENT...
Comparable rows
26/33
Latest evidence
30 Jun 2026
13D/G
13F
3/4/5
Lead comparable stake: 6.2%
7 rows are not safely comparable across share classes.
13D/G row: BALYASNY ASSET MANAGEMENT L.P.
Showing 1-8 of 33 holder rows.
Quick read
BALYASNY ASSET MANAGEMENT L.P. leads the comparable SEC ownership view at 6.2%.
26 of 33 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens BALYASNY ASSET MANAGEMENT L.P.'s linked filing trail.
Comparable ownership
Top 5
BALYASNY ASSET MANAGEMENT L.P.
6.2%
GREAT POINT PARTNERS LLC
6.2%
Janus Henderson Group Ltd.
6.2%
ADAR1 Capital Management, LLC
5.4%
Atika Capital Management LLC
5.1%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 33 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BALYASNY ASSET MANAGEMENT L.P. |
13D/G
13F
Company
|
6.2%
|
$6,000,000
500,000 shares
|
$0 | 30 Jun 2026 |
| GREAT POINT PARTNERS LLC |
13D/G
13F
Company
|
6.2%
|
$6,000,000
500,000 shares
|
$0 | 30 Jun 2026 |
| Janus Henderson Group Ltd. |
13D/G
|
6.2%
|
$6,000,000
500,000 shares
|
$0 | 30 Jun 2026 |
| ADAR1 Capital Management, LLC |
13D/G
13F
Company
|
5.4%
|
$5,012,688
417,724 shares
|
$0 | 30 Jun 2026 |
| Atika Capital Management LLC |
13D/G
13F
Company
|
5.1%
|
$4,800,000
400,000 shares
|
$0 | 30 Jun 2026 |
| RA CAPITAL MANAGEMENT, L.P. |
13F
Company
|
6.5%
|
$5,680,000
500,000 shares
|
— | 30 Jun 2026 |
| Jupiter Topco LLC |
13F
Company
|
6.5%
|
$5,652,500
500,000 shares
|
— | 30 Jun 2026 |
| FRANKLIN RESOURCES INC |
13F
Company
|
5.2%
|
$4,544,000
400,000 shares
|
— | 30 Jun 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 20 Aug 2025.
Buys
$0
Insiders: 0
Sells
$0
Insiders: 0
Net
$0
Shares: 0
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-7 of 7 reporting-owner rows connected to JATT II Acquisition Corp.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
7
Largest Forms 3/4/5 holder
Nicholas Fernandez
Net 12M change
$0
Latest report
06 Jun 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Nicholas Fernandez | Chief Financial Officer, Director | Mixed | 16 Apr 2026 | |||
| Verender S. Badial | Director | Mixed | 16 Apr 2026 | |||
| Jonathon Kluft | Director | Mixed | 16 Apr 2026 | |||
| JATT Ventures II L.P. | 10%+ Owner | Mixed | 06 Jun 2026 | |||
| Someit Sidhu | Chief Executive Officer, Director, 10%+ Owner | Mixed | 06 Jun 2026 | |||
| Arjun Goyal | Director | Mixed | 16 Apr 2026 | |||
| Christopher Staral | Director | Mixed | 16 Apr 2026 |
Recent insider transactions for JATT II Acquisition Corp.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Someit Sidhu | JATT | Ordinary Shares | Other | -11.1% | -225,000 | 1,800,000 | 06 Jun 2026 | See Footnote | ||
| JATT Ventures II L.P. | JATT | Ordinary Shares | Other | -11.1% | -225,000 | 1,800,000 | 06 Jun 2026 | Direct | ||
| JATT Ventures II L.P. | Ordinary Shares | Purchase | 17.4% | 300,000 | 2,025,000 | 20 Apr 2026 | Direct | |||
| Someit Sidhu | Ordinary shares | Purchase | 17.4% | 300,000 | 2,025,000 | 20 Apr 2026 | See Footnote |
* marks a reported price that did not pass the local price check.